Question

Which statement about the effect of temperature on the speed of sound is correct?(1 point)
Responses

Changes in temperature have no effect on the speed of sound.
Changes in temperature have no effect on the speed of sound.

As temperature increases, the speed of sound decreases because molecules in the medium collide less frequently.
As temperature increases, the speed of sound decreases because molecules in the medium collide less frequently.

As temperature increases, the speed of sound increases because molecules in the medium collide more frequently.
As temperature increases, the speed of sound increases because molecules in the medium collide more frequently.

As temperature increases, the speed of sound increases because the medium becomes denser.
As temperature increases, the speed of sound increases because the medium becomes denser.

Answer 1

Correct answer: "As temperature increases, the speed of sound increases because molecules in the medium collide more frequently."

Brief explanation: In gases the speed of sound v ≈ sqrt(γRT/M), so v increases with the square root of temperature T. Higher temperature means higher average molecular speeds and faster transmission of pressure disturbances.